Menu
In C++, the file of the source code and current line number is decided by FILE and INLINE, which is decided at compiling time, is there any method in Java that could do the similar thing? The file and line number is decided at compiling time instead of runtime? this will be convenient for log. I kind of doubt that use runtime method to detect these information will decrease the performance.
875
Using the Java BufferedRedaer class is the most common and simple way to read a file line by line in Java. It belongs to java.io package. Java BufferedReader class provides readLine() method to read a file line by line.
getStackTrace() , one can get the line number of an StackTraceElement .
1. Number of classes in a Java source file: A Java program can contain any number of classes, and at most, one of them can be declared as a public class.
You could use Thread.getStackTrace() and something like
System.out.println(Thread.currentThread().getStackTrace()[1]);
Output includes the current method and line number (if debugging was compiled in). For example,
com.stackoverflow.Main.main(Main.java:23)
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
